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2 Sheets-Sheet 1.

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0. z. ONBILL. STREET SWBEPER.

No. 515,501. Patented Feb. 27, 1894( m mm. ummnmma cow-MY.

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UNITED STATES PATENT onAnLEs Z. ONEILL, on NEW YORK, N. Y., ASSIGNOR 'roWILLIAM CHAPMAN, or SAME PLAoE.

STREET-SWEEPER.

SPECIFICATION forming part of Letters Patent No. 515,501, dated February2'7, 1894.

Application filed July 26,1393- Serial No. 481,480. (No model.)

To a whom it may concern:

Be it known that 1, CHARLES Z. ONEILL, of New York, in the county andState of New York, have invented certain new and useful Improvements inStreet-Sweeping Machines;

and I do hereby declare that the following is i a, full and exactdescription thereof, reference being hadto the accompanying drawings,and to the letters of reference marked thereon, making a part of thisspecification.

My invention relates to street sweeping machines which are provided witha broom which may be raised and lowered from the platform of the truckand is driven, when in action, by suitable gearing from the axle of thetruck or from any other source of power. In such machines the broom maybe raised or lowered more or less according to the nature of the work tobe done and may also be raised clear of the pavement.

It is the object of my invention to provide improved means whereby thebroom may be raised or lowered as required by the nature of the work tobe done without stopping its rotation but whereby the rotation shall bestopped entirely and automatically as soon as the broom is raised out ofoperative position, thereby simplifying the construction and enablingthe driver to control the broom much more easily than if he wererequired to manipulate two difierent levers.

In the drawings: Figure 1 is a plan view of enough of a street sweepingmachine to illustrate the application of my improvement. Fig. 2 is apartial vertical section on the line m-a: of Fig. 1, looking toward theleft. Fig. 3 is a detail view in perspective of the means employed forimparting motion from the rock-shaft to the clutclrshifter. Fig. 4 is asectional elevation showing the same detail.

The general construction and arrangement of the street sweeping machineto which my invention is applied are immaterial except as to those partsto which my improvement directly relates.

As represented in the drawings the improvement is shown as applied to amachine of well known construction in which the body or platform A isprovided with suitable bearings B to receive the axle O.

The broom D is represented as having its hearings in blocks cl, cl,which are supported by links d from the ends of arms e, the latter beingfixed to a rock-shaft E which is mounted in bearings a, a, upon theplatform A. The shaft E is rocked to raise and lower the broom asrequired by means of a second rock-shaft F mounted in bearings a andextended forward to a point G near the driver whereit is provided with ahand lever H which is adapted for engagement with the usual locking-barI. The shafts E and F may be geared in any suitable manner, thesegmental bevel-gears f, f, which are represented in Fig. 1, being welladapted for this purpose. The broom is drawn over the pavement by armsK, K, which are connected to the respective blocks (Z, d, and to theaxle C, the arm K being indicated in dotted lines.

Any suitable arrangement of gearing may be used for rotating the broom.A convenient arrangement is shown, partly in dotted lines in Fig. 1, inwhich a bevel-gear L is mounted loosely upon the shaft 0 and is adaptedto be driven therefrom; it meshes with a pinion M fixed to a short shaftM which is mounted in suitable bearings parallel with the axis of thebroom and bears a chain-wheel m. A chain N passes over the wheel m andtransmits motion to a chain-wheeln which is fixed to the shaft of thebroom D.

The parts already described are of usual construction and arrangementandin accordance with my invention the movement of the shaft F inraising and lowering the broom is made use of to control the driving ofthe gear L by the axle C, the means for this purpose being so arrangedthat when the shaft F is rocked sufficiently to raise the broom out ofoperation, the wheel L shall be disconnected from the axle C, while themovements of the shaft to raise and lower the broom slightly accordingto the requirements of work, do. not eifect such disconnection.

The means whichl have shown in the draw- 5 iugs as embodying myinvention comprise a sleeve L to which the gear L is secured and whichforms one member of a clutch, the sleeve and gear being held fromshifting laterally toward the right in Fig. 2 by a fixed 10c collar Z.The other member L of the clutch is free to slide on the axle C but isprevented from rotation thereon by a feather c. The clutch member L isengaged by a clutchshifterP which is pivoted upon a fixed bracket 19 andmay be pressed by a spring 19 to tend normally to press the clutchmember L into operative engagement with the clutch member L. Theclutohshifter P is adapted to be operated by the movement of the shaft Fand might be connected positively thereto except for the reason that itis desirable to permit the broom to be raised more or less according tothe requirements of the work without being thrown out of operation.Therefore I prefer to provide for some lost motion in the connectionbetween the shaft and the lever, although it will be obvious thatprovision might be made for such lost motion be tween the lever and theclutch.

As represented in Figs. 3 and 4, I prefer to mount loosely upon theshaft F a hub Q, having an arm or projection Q to the outer end of whichthe lever P may be connected by a link R. A hub S is fixed upon theshaft F adjacent to the hub Q, preferably in such manner as to beadjustable thereon, as by means of a set screw 8. The hub S has a fingeror projection S which is normally out of contact with the projection Qbut is moved into contact therewith when the shaft F has been rockedsufficiently to raise the broom out of operation. The further movementof the shaft F then raises the broom clear of the pavement and, throughthe contact of the finger S with the projection Q, effects thedisengagement of the clutch L, L and therefore stops the rotation of thebroom. The

hub Q is held in place on the shaft between the hub S and a collar Qwhich is fixed on the shaft by a set-screw, as shown in Fig. 1. Asrepresented in the drawings the movement of the lever H into engagementwith the first notch of the member I raises the broom slightly but doesnot shift the clutch. The movement of the lever into the second notchraises the broom stillfarther and partly withdraws the teeth of theclutch member L from the teeth of the clutch member L, but does noteffect a complete disengagement. movement of the lever into the thirdnotch raises the broom clear of the ground and effects the completedisengagement of the clutch and the stopping of the broom.

I claim as my invention- In a street sweeping machine, the combinationof a rotary broom gearing to drive said broom and including a clutch, arock shaft and intermediate means to raise and lower the broom, a hubfixed upon said shaft and bearing a pin or projection, a second hubloosely mounted on said shaft and having a shoulder and an arm, and aclutch shifter operated by said arm to disengage said clutch as thebroom is raised, substantially as shown and described.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

CHARLES Z. ONEILL.

WVitnesses:

A. N. JEsBERA, A. WIDDER.

